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If you start with 250.0mL of a 0.030 M benzoic acid solutions (Ka = 6.28 x 10-5) as well as then add 5.00mL of 1.00 M NaOH , Explain what would be the pH of the solution?
what is the energy of light that is emittted by one iron atom during its decay from an excited state to a ground state
If the pKa for acetic acid, found in commercial white vinegar is 4.754 at 298K, then calculate the pH, percent ionization, and pOH of a 0.585 M acetic acid of 5% vinegar solution. Do not forget to first determine the Ka, setup an "ICE" table, defi..
A solution is initially 0.050M in acetate, CH3COO- (Kb = 5.6 x 10^-10). 10.0mL of 0.10 M HCl is added. The Ka for the conjugate weak acid of CH3CHOO- is 1.8 x 10^-5. Calculate the pH for this solution at equilibrium.
A buffer is to be made with a pH of 8.50 by adding hydrobromic acid to one of the following bases. Which base is the best choice for making this buffer
Then 1.00 mL of a 10.9 mM Lithium standard was added to 9.00 mL of serum, and this spiked serum gave an intensity reading of 721 units. What is the original concentration of Li in the serum?
Trifluoroiodomethane, CF3-I, undergoes free radical addition to alkenes. Explain the fact that the free-radical addition of this compound to 2-methyl-2-butene is faster than its addition to 1-pentene.
You are titrating 110.0 mL of 0.080 M Ca2 with 0.080 M EDTA at pH 9.00. Log Kf for the Ca2 -EDTA complex is 10.65, and the fraction of free EDTA in the Y4- form, ?Y4-, is 0.041 at pH 9.00.
The fuel used in many disposable lighters is liquid butane C4H10 How many carbon atoms
An equilibrium mixture of this reaction at a certain temperature was found to have [NH3]= 0.270M and [H2S]= 0.360M. What is the value of the equilibrium constant (Kc) at this temperature?
The pH of a 0.175 M aqueous solution of a weak acid is 3.52. What is Ka for this acid
What would affect the chemical shift of the sp3 hybridized carbon atom that would cause its peak to appear at ~ 64 ppm in a carbon-13 NMR
A compound of bromine and fluorine is used to make UF6, which is an important chemical in processing and reprocessing of nuclear fuel. The compound contains 58.37% by mass of bromine. Determine its empirical formula.
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